Isaac, is there an easy way to recognize this problem? We also index synonym tokens in the same position (like you do, and I'm sure that our positions are set correctly). I could test whether the default similarity factory in solrconfig.xml had any effect (before/after reindexing).
--roman On Mon, Dec 9, 2013 at 2:42 PM, Isaac Hebsh <isaac.he...@gmail.com> wrote: > Hi Robert and Manuel. > > The DefaultSimilarity indeed sets discountOverlap to true by default. > BUT, the *factory*, aka DefaultSimilarityFactory, when called by > IndexSchema (the getSimilarity method), explicitly sets this value to the > value of its corresponding class member. > This class member is initialized to be FALSE when the instance is created > (like every boolean variable in the world). It should be set when "init" > method is called. If the parameter is not set in schema.xml, the default is > true. > > Everything seems to be alright, but the issue is that "init" method is NOT > called, if the similarity is not *explicitly* declared in schema.xml. In > that case, init method is not called, the discountOverlaps member (of the > factory class) remains FALSE, and getSimilarity explicitly calls > setDiscountOverlaps with value of FALSE. > > This is very easy to reproduce and debug. > > > On Mon, Dec 9, 2013 at 9:19 PM, Robert Muir <rcm...@gmail.com> wrote: > > > no, its turned on by default in the default similarity. > > > > as i said, all that is necessary is to fix your analyzer to emit the > > proper position increments. > > > > On Mon, Dec 9, 2013 at 12:27 PM, Manuel Le Normand > > <manuel.lenorm...@gmail.com> wrote: > > > In order to set discountOverlaps to true you must have added the > > > <similarity class="solr.DefaultSimilarityFactory"> to the schema.xml, > > which > > > is commented out by default! > > > > > > As by default this param is false, the above situation is expected with > > > correct positioning, as said. > > > > > > In order to fix the field norms you'd have to reindex with the > similarity > > > class which initializes the param to true. > > > > > > Cheers, > > > Manu > > >
